Standard No.:	SN/T 2004.3-2005
Chinese Name:	电子电气产品中六价铬的测定 第3部分:二苯碳酰二肼分光光度法
English Name:	Determination of Chromium(VI) in electrical and electronic equipment--Part 3: 1 5-Diphenylcarbohydrazide spectrophotometric method
Professional Classification:	L04 Basic standards and general methods
Professional Classification:	SN Professional Standard - Import&Export Inspection
ICS Classification:	31.020
Issued by:
Issued on:	2005-07-18
Implemented on:	2006-01-18
Status:
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	60 (USD)
Delivery:	via email in 1-3 business day

1 Scope
This part specifies the 1.5-diphenylcarbahydrazide spectrophotometric determination method for chromium (VI) in electrical and electronic equipment.
This part is applicable to determination of chromium (VI) in electrical and electronic equipment.

2 Method Summary

The water-soluble or water-insoluble chromium (VI) compound is leached from the sample by alkaline leach liquor; the chromium (VI) in leach liquor react with 1.5-diphenylcarbahydrazide in acid solution and generate claret-colored complex, then spectrophotometric determination is carried out where the wavelength is 540nm.

3 Reagents and Materials